improved code

iOSClient/Favorites/CCFavorites.m

@@ -268,24 +268,6 @@
     }];
 }
 
-#pragma --------------------------------------------------------------------------------------------
-#pragma mark ==== Download Preview ====
-#pragma --------------------------------------------------------------------------------------------
-
-- (void)downloadThumbnail:(tableMetadata *)metadata serverUrl:(NSString *)serverUrl indexPath:(NSIndexPath *)indexPath
-{
-    CGFloat width = [[NCUtility sharedInstance] getScreenWidthForPreview];
-    CGFloat height = [[NCUtility sharedInstance] getScreenHeightForPreview];
-
-    OCnetworking *ocNetworking = [[OCnetworking alloc] initWithDelegate:nil metadataNet:nil withUser:appDelegate.activeUser withUserID:appDelegate.activeUserID withPassword:appDelegate.activePassword withUrl:appDelegate.activeUrl];
-        
-    [ocNetworking downloadPreviewWithMetadata:metadata serverUrl:serverUrl withWidth:width andHeight:height completion:^(NSString *message, NSInteger errorCode) {
-        if (errorCode == 0 && [[NSFileManager defaultManager] fileExistsAtPath:[CCUtility getDirectoryProviderStorageIconFileID:metadata.fileID fileNameView:metadata.fileNameView]] && [[NCMainCommon sharedInstance] isValidIndexPath:indexPath tableView:self.tableView]) {
-            [self.tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationNone];
-        }
-    }];
-}
-
 #pragma --------------------------------------------------------------------------------------------
 #pragma mark ==== Open in... ====
 #pragma --------------------------------------------------------------------------------------------
@@ -627,11 +609,6 @@
     
     tableMetadata *metadataFolder = [[NCManageDatabase sharedInstance] getMetadataWithPredicate:[NSPredicate predicateWithFormat:@"fileID == %@", directory.fileID]];
     
-    // Download Preview
-    if (metadata.hasPreview == 1 && ![CCUtility fileProviderStorageIconExists:metadata.fileID fileNameView:metadata.fileNameView]) {
-        [self downloadThumbnail:metadata serverUrl:serverUrl indexPath:indexPath];
-    }
-    
     UITableViewCell *cell = [[NCMainCommon sharedInstance] cellForRowAtIndexPath:indexPath tableView:tableView metadata:metadata metadataFolder:metadataFolder serverUrl:self.serverUrl autoUploadFileName:autoUploadFileName autoUploadDirectory:autoUploadDirectory];
     
     // NORMAL - > MAIN

iOSClient/Main/CCMain.m

@@ -989,25 +989,6 @@
     [self tableView:self.tableView didSelectRowAtIndexPath:indexPath];
 }
 
-#pragma mark -
-#pragma --------------------------------------------------------------------------------------------
-#pragma mark ==== Download Preview ====
-#pragma --------------------------------------------------------------------------------------------
-
-- (void)downloadThumbnail:(tableMetadata *)metadata serverUrl:(NSString *)serverUrl indexPath:(NSIndexPath *)indexPath
-{
-    CGFloat width = [[NCUtility sharedInstance] getScreenWidthForPreview];
-    CGFloat height = [[NCUtility sharedInstance] getScreenHeightForPreview];
-    
-    OCnetworking *ocNetworking = [[OCnetworking alloc] initWithDelegate:nil metadataNet:nil withUser:appDelegate.activeUser withUserID:appDelegate.activeUserID withPassword:appDelegate.activePassword withUrl:appDelegate.activeUrl];
-
-    [ocNetworking downloadPreviewWithMetadata:metadata serverUrl:serverUrl withWidth:width andHeight:height completion:^(NSString *message, NSInteger errorCode) {
-        if (errorCode == 0 && [[NSFileManager defaultManager] fileExistsAtPath:[CCUtility getDirectoryProviderStorageIconFileID:metadata.fileID fileNameView:metadata.fileNameView]] && [[NCMainCommon sharedInstance] isValidIndexPath:indexPath tableView:self.tableView]) {
-            [self.tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationNone];
-        }
-    }];
-}
-
 #pragma --------------------------------------------------------------------------------------------
 #pragma mark ==== Download ====
 #pragma --------------------------------------------------------------------------------------------
@@ -4163,11 +4144,6 @@
         return [CCCellMain new];
     }
     
-    // Download Preview
-    if (metadata.hasPreview == 1 && ![CCUtility fileProviderStorageIconExists:metadata.fileID fileNameView:metadata.fileNameView]) {
-        [self downloadThumbnail:metadata serverUrl:serverUrl indexPath:indexPath];
-    }
-    
     UITableViewCell *cell = [[NCMainCommon sharedInstance] cellForRowAtIndexPath:indexPath tableView:tableView metadata:metadata metadataFolder:_metadataFolder serverUrl:self.serverUrl autoUploadFileName:_autoUploadFileName autoUploadDirectory:_autoUploadDirectory];
     
     // NORMAL - > MAIN

iOSClient/Main/NCMainCommon.swift

@@ -199,7 +199,7 @@ class NCMainCommon: NSObject {
         if FileManager().fileExists(atPath: CCUtility.getDirectoryProviderStorageIconFileID(metadata.fileID, fileNameView: metadata.fileName)) {
             image = UIImage.init(contentsOfFile: CCUtility.getDirectoryProviderStorageIconFileID(metadata.fileID, fileNameView: metadata.fileName))
             imagePreview = true
-        } 
+        }
         
         // Download preview
         NCNetworkingMain.sharedInstance.downloadThumbnail(with: metadata, serverUrl: serverUrl, view: collectionView, indexPath: indexPath)
@@ -436,6 +436,9 @@ class NCMainCommon: NSObject {
             CCUtility.getDirectoryProviderStorageFileID(metadata.fileID, fileNameView: metadata.fileNameView)
         }
         
+        // Download preview
+        NCNetworkingMain.sharedInstance.downloadThumbnail(with: metadata, serverUrl: serverUrl, view: tableView, indexPath: indexPath)
+        
         // CCCell
         if metadata.status == k_metadataStatusNormal {
             
@@ -1127,7 +1130,7 @@ class NCNetworkingMain: NSObject, CCNetworkingDelegate {
         }
     }
     
-    func downloadThumbnail(with metadata: tableMetadata, serverUrl: String, view: Any, indexPath: IndexPath) {
+    @objc func downloadThumbnail(with metadata: tableMetadata, serverUrl: String, view: Any, indexPath: IndexPath) {
         
         if metadata.hasPreview == 1 && !CCUtility.fileProviderStorageIconExists(metadata.fileID, fileNameView: metadata.fileName) {
             let width = NCUtility.sharedInstance.getScreenWidthForPreview()